JPH0751297A - Manufacture of cast restoration for dentistry - Google Patents
Manufacture of cast restoration for dentistryInfo
- Publication number
- JPH0751297A JPH0751297A JP22228093A JP22228093A JPH0751297A JP H0751297 A JPH0751297 A JP H0751297A JP 22228093 A JP22228093 A JP 22228093A JP 22228093 A JP22228093 A JP 22228093A JP H0751297 A JPH0751297 A JP H0751297A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- prototype
- model
- cast
- casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- Dental Prosthetics (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、歯科用鋳造修復物を製
造する製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing method for manufacturing a dental casting restoration.
【０００２】[0002]
【従来の技術】虫歯等の修復に用いられる鋳造修復物を
製造する従来の要領は次のようであった。先ず、病的組
織が除去されて窩洞を有する歯に型取り素材を押圧して
形成した型を使用し、該型に基づいて図１５に示すよう
な石膏製の模型ａを製作する。その後、該模型ａに形成
された窩洞ｂにワックスやレジンを充填して、図１６に
示すような鋳造修復物の原型ｂを形成する。原型ｂが完
成すると、該原型ｂに、図１６に示すようにスプルー線
ｃを植立する。2. Description of the Related Art The conventional procedure for producing a cast restoration used for restoration of caries has been as follows. First, a mold formed by pressing a molding material onto a tooth having a cavity in which pathological tissue is removed is used, and a plaster model a as shown in FIG. 15 is manufactured based on the mold. Then, the cavity b formed in the model a is filled with wax or resin to form a prototype b of the cast restoration as shown in FIG. When the prototype b is completed, the sprue line c is planted in the prototype b as shown in FIG.
【０００３】その後、スプルー線ｃを摘み上げて原型ｂ
を模型ａから取り外して後、図１７に示すように該原型
ｂとスプルー線ｃを鋳型材ｄで包埋する。この包埋は、
通常図１７に示すような鋳造フラスクｅ（筒体ｆと、そ
の底部に着脱自在に嵌着され且つ上面に円錐台状のスプ
ルー台ｇを有する蓋体ｈとから形成されている）を用い
て次のように行われていた。該スプルー台上部のワック
ス充填部ｉに前記スプルー線の先端部分ｊを埋入して立
設状態とし、然る後、蓋体ｈを筒体ｆの底部に嵌着し
て、筒体の上端開口部ｋより鋳型材を注入し、注入鋳型
材の硬化によって、原型ｂをスプルー線ｃと共に鋳型材
ｄで包埋していた。After that, the sprue line c is picked up and the prototype b
After removing from the model a, the prototype b and the sprue line c are embedded in a mold material d as shown in FIG. This embedding is
Usually, a casting flask (e.g., a cylinder f and a lid h that is detachably fitted to the bottom of the cylinder and has a frustoconical sprue g on the top) is used as shown in FIG. It was done as follows. The tip portion j of the sprue wire is embedded in the wax filling portion i on the upper portion of the sprue stand to be in an upright state, and then the lid h is fitted to the bottom portion of the cylinder f so that the upper end of the cylinder f The mold material was injected through the opening k, and the mold b was embedded in the mold material d together with the sprue line c by curing the injected mold material.
【０００４】その後、蓋体ｈが取り外され、スプルー線
ｃが金属製の場合はそれが抜取られる。スプルー線がワ
ックスやレジンを以て形成されているときは、それは原
型ｂと共に焼却される。これによって図１８に示す鋳型
ｍが完成する。Thereafter, the lid h is removed, and if the sprue line c is made of metal, it is pulled out. When the sprue wire is formed of wax or resin, it is incinerated together with the prototype b. This completes the mold m shown in FIG.
【０００５】然る後、図１８において点を付して示すよ
うに、スプルー線の抜取りやその焼却によって形成され
た湯道ｎより鋳型ｍ内に溶湯ｏを湯込む。鋳造が完了し
た後、図１９に示すように鋳造体ｐを鋳型から取り出
し、該鋳造体ｐに連なる突出湯道ｑを慎重に切除すると
共に切除部分を入念に研磨し、図２０の鋳造修復物ｒと
していた。After that, as shown by dots in FIG. 18, the molten metal o is poured into the mold m from the runner n formed by removing the sprue wire and incinerating the sprue wire. After the casting is completed, the cast body p is taken out from the mold as shown in FIG. 19, the projecting runners q connected to the cast body p are carefully cut off, and the cut portion is carefully polished. It was r.
【０００６】[0006]
【発明が解決しようとする課題】しかし、このような従
来の製造方法においては、次のような各種の問題点があ
った。 噛み合わせに直接影響する鋳造体の噛合面ｓに突出
湯道ｑが連なる関係上、この突出湯道ｐを慎重に切除す
ると共に切除部分を入念に研磨する必要があり、作業に
相当の熟練を要するばかりか作業効率が悪い問題があっ
た。 スプルー線ｃを摘み上げて原型ｂを模型ａから取り
外す際、原型の形態が複雑であると、その取り外しが円
滑に行われずに原形が変形するおそれがあった。原型が
変形すると鋳造体を精度よく製造できないために、原型
の造り直しが必要ともなった。 鋳型材を注入した際、図２１に示すように、原型ｂ
の裏側に気泡ｒが残る場合が生じた。気泡を含んだまま
原型が鋳型材で包埋されると、この気泡部分を空洞とす
る鋳型が形成されてしまい、従って得られる鋳造体ｐ
は、図２２に示すように金属の玉ｔが付着した不良品と
なるため、それを除去するために余分の手間を要した。 鋳型を形成する場合、スプルー線が金属製であると
きはこれを抜取らねばならないが、抜き忘れたまま溶湯
を鋳込んでしまい、鋳造不可能の事態を招くこともあっ
た。本発明は、かかる問題点の解決を技術的課題とす
る。However, the conventional manufacturing method as described above has various problems as described below. Since the protruding runners q are connected to the mating surface s of the cast body, which directly affects the meshing, it is necessary to carefully cut off the protruding runners p and carefully polish the cut off portion. Not only that, but there was a problem that work efficiency was poor. When the master b is removed from the model a by picking up the sprue line c, if the master has a complicated shape, the removal may not be performed smoothly and the master may be deformed. If the prototype is deformed, it is not possible to manufacture the cast body with high precision, and it is necessary to remake the prototype. When the mold material is injected, as shown in FIG.
There was a case where bubbles r remained on the back side of. When the prototype is embedded with the mold material while containing the bubbles, a mold having a cavity in the bubble portion is formed, and thus the obtained cast body p
22 is a defective product in which metal balls t are attached as shown in FIG. 22, so extra work is required to remove it. When forming a mold, if the sprue wire is made of metal, it must be extracted, but the molten metal was cast without forgetting to remove it, which sometimes resulted in a situation where casting was impossible. The present invention makes it a technical problem to solve such a problem.
【０００７】[0007]
【課題を解決するための手段】本発明に係る歯科用鋳造
修復物の製造方法（以下製造方法という）は以下の手段
を採用する。即ち、本発明に係る製造方法は、病的組織
が除去されて窩洞を有する歯に型取り素材を押圧して形
成した型を使用する歯科用鋳造修復物の製造方法であっ
て，該型に基づいて、石膏系やリン酸系等の耐火性素材
からなる模型材を用いて模型１を製作した後、該模型１
に形成された窩洞（幅や深さには種々のものがある）２
の底部に貫通孔３を設け、その後、ワックス又はレジン
を該窩洞２に充填して鋳造体の原型６を形成し、その
後、該原型６を有する模型を、貫通孔３の裏面側の端部
１９が開放するように鋳型材９で包埋し、鋳型材が硬化
した後に前記原型６を焼却して鋳型２１を形成し、該鋳
型２１内に溶湯（セラミックスの溶湯を含む）を鋳込
み、脱型後、鋳造体２５に連なる突出湯道２６を切除す
ることを特徴とするものである。The method for producing a dental cast restoration according to the present invention (hereinafter referred to as the production method) employs the following means. That is, the manufacturing method according to the present invention is a method for manufacturing a dental casting restoration using a mold formed by pressing a molding material onto a tooth having a cavity in which pathological tissue is removed, Based on this, after the model 1 is manufactured using a model material made of a fire-resistant material such as gypsum-based or phosphoric acid-based,
Cavity formed in the (different width and depth) 2
A through hole 3 is provided at the bottom of the through hole 3 and then the cavity 2 is filled with wax or resin to form a prototype 6 of the cast body, and then the model having the prototype 6 is attached to the rear end of the through hole 3. The mold material 9 is embedded so that the opening 19 is opened. After the mold material is hardened, the prototype 6 is incinerated to form a mold 21, and a molten metal (including a molten metal of ceramics) is cast into the mold 21 and removed. After the die, the projecting runner 26 connected to the cast body 25 is cut off.
【０００８】前記製造方法において、原型６を有する模
型を鋳型材９で包埋する際、筒体１１と、その底部に着
脱自在に嵌着され且つ上面に円錐台状或いは角錐台状を
呈する載置部１２を具えた蓋体１３とからなる鋳造フラ
スク１０を用いる場合は、該載置部１２の上面１５に前
記模型１の裏面部１６を当接させると共に、貫通孔３に
鋳型材が侵入するのを防止するために該裏面部１６の周
囲をワックスで被覆し、その後蓋体１３を筒体１１の底
部に嵌着して、筒体の上端開口部１８より鋳型材９を注
入し、該注入鋳型材の硬化によって、原型６を有する模
型を鋳型材９で包埋する。In the above manufacturing method, when the model having the prototype 6 is embedded in the mold material 9, the cylindrical body 11 and the mounting body which is detachably fitted to the bottom portion thereof and has a truncated cone shape or a truncated pyramid shape on the upper surface thereof. When the casting flask 10 including the lid 13 having the placing portion 12 is used, the back surface portion 16 of the model 1 is brought into contact with the upper surface 15 of the placing portion 12, and the mold material enters the through hole 3. In order to prevent this from happening, the periphery of the back surface portion 16 is covered with wax, then the lid body 13 is fitted to the bottom portion of the tubular body 11, and the mold material 9 is injected from the upper end opening 18 of the tubular body, The model having the prototype 6 is embedded in the mold material 9 by hardening the injection mold material.
【０００９】[0009]
【実施例】以下本発明の実施例を図面に基づいて説明す
る。本発明の製造方法においては、先ず、図１に示す例
えば石膏製の模型１を製作する。該模型１は、病的組織
が除去された窩洞を有する歯に型取り素材を押圧して形
成した型を使用し、この型に石膏を充填して製作され
る。Embodiments of the present invention will be described below with reference to the drawings. In the manufacturing method of the present invention, first, the model 1 made of, for example, gypsum shown in FIG. 1 is manufactured. The model 1 is manufactured by using a mold formed by pressing a molding material onto a tooth having a cavity from which pathological tissue has been removed, and filling the mold with gypsum.
【００１０】該模型１の表面側に形成された窩洞２の例
えば底部側から、図２に示すように貫通孔３を設ける。
該貫通孔３の裏面側の部分は、湯口を大きくするために
コーン状の拡大孔５とするのがよい。その後ワックスや
レジンを該窩洞２に充填して、図３に示すように鋳造修
復物の原型６を形成する。本実施例においては、後工程
における包埋を効率的に行うため、図４に示すように、
窩洞２を有する一個の歯部を、切断により他の部分と独
立させて単位模型１ａを形成する。なお窩洞２の底部に
貫通孔３を設ける工程は、単位模型１ａを形成した後に
行ってもよい。As shown in FIG. 2, a through hole 3 is provided from, for example, the bottom side of the cavity 2 formed on the surface side of the model 1.
The portion on the back surface side of the through hole 3 is preferably a cone-shaped enlarged hole 5 in order to enlarge the sprue. Thereafter, the cavity 2 is filled with wax or resin to form a prototype 6 of the cast restoration as shown in FIG. In this embodiment, in order to efficiently perform the embedding in the post process, as shown in FIG.
One tooth having the cavity 2 is cut to be independent of other portions to form the unit model 1a. The step of providing the through hole 3 in the bottom of the cavity 2 may be performed after the unit model 1a is formed.
【００１１】原型６を形成した後、単位模型１ａを鋳型
材９で包埋する。その際、図５に示すような鋳造フラス
ク１０を用いる。該鋳造フラスク１０は、円筒状の筒体
１１と、その底部に着脱自在に嵌着され且つ上面に円錐
台状の載置部１２を有する蓋体１３とからなる。これを
用いて例えば次のように包埋する。After the master 6 is formed, the unit model 1a is embedded in the mold material 9. At that time, a casting flask 10 as shown in FIG. 5 is used. The casting flask 10 comprises a cylindrical tubular body 11 and a lid 13 which is detachably fitted to the bottom of the tubular body 11 and has a frustoconical mounting portion 12 on the upper surface. Using this, embedding is performed as follows, for example.
【００１２】該載置部１２の上面１５にワックスを塗布
して単位模型１ａの裏面部１６を当接させる共に、貫通
孔３に鋳型材が侵入するのを防止するため該裏面部１６
の周囲をワックス１７で被覆する。なお載置部の上面に
は、通常複数個の単位模型が載設されるのであるが、図
面においては便宜上、一個の単位模型を載設した場合が
示されている。Wax is applied to the upper surface 15 of the mounting portion 12 so that the rear surface portion 16 of the unit model 1a is brought into contact with the upper surface 15, and the rear surface portion 16 is provided to prevent the mold material from entering the through hole 3.
The periphery of the is coated with wax 17. Although a plurality of unit models are usually mounted on the upper surface of the mounting portion, the case where one unit model is mounted is shown in the drawings for the sake of convenience.
【００１３】その後、該蓋体１３を筒体１１の底部に嵌
着して、筒体の上端開口部１８より石膏系の鋳型材９を
注入し、これによって、原型６を有する単位模型１ａを
鋳型材９で包埋する。なお筒体１１の内周面には、図５
に一点鎖線で示すように、鋳造フラスク１０による鋳型
材の膨張抑制を緩和する等の目的でアスベスト等のテー
プ状物１４が添設されることがある。鋳型材が硬化した
後、蓋体１３を取り外すと、単位模型１ａに設けた貫通
孔３の裏面側の端部（拡大孔の端部）１９（図６）が、
載置部１２によって形成されたコーン状の空所２０（図
６）に開放する。After that, the lid 13 is fitted to the bottom of the cylinder 11, and the plaster-based mold material 9 is injected from the upper end opening 18 of the cylinder, whereby the unit model 1a having the prototype 6 is obtained. It is embedded in the template material 9. It should be noted that the inner peripheral surface of the cylindrical body 11 has
As shown by the alternate long and short dash line, a tape-shaped material 14 such as asbestos may be additionally provided for the purpose of relaxing the expansion suppression of the casting material by the casting flask 10. When the lid 13 is removed after the mold material is hardened, the end portion (end portion of the enlarged hole) 19 (FIG. 6) on the back surface side of the through hole 3 provided in the unit model 1a is
It is opened to the cone-shaped space 20 (FIG. 6) formed by the mounting portion 12.
【００１４】その後硬化状態の鋳型材を加熱し、前記原
型６を焼却して、図６に示す鋳型２１を形成する。該鋳
型２１は、原型の焼却によって形成された空洞部２２
に、前記貫通孔からなる湯道２３が連設されているた
め、図６に点を付して示すように、空所２０に開放する
該湯道２３より空洞部２２に溶湯２４を鋳込む。鋳造が
完了した後、サンドブラスター等によって鋳型材及び単
位模型を砕いて、図７に示す鋳造体２５を得る。その
後、鋳造体２５に連なる突出湯道２６を切除すると共
に、表面に適宜仕上げ研磨を施して、図８に示す鋳造修
復物２７とする。After that, the mold material in the cured state is heated to incinerate the prototype 6 to form the mold 21 shown in FIG. The mold 21 has a cavity 22 formed by incineration of the prototype.
Since the runners 23 formed of the through holes are continuously provided, the molten metal 24 is cast into the cavity 22 from the runners 23 that are open to the void 20 as shown by dots in FIG. . After the casting is completed, the mold material and the unit model are crushed by a sand blaster or the like to obtain a cast body 25 shown in FIG. After that, the protruding runners 26 connected to the cast body 25 are cut off, and the surface is appropriately subjected to finish polishing to obtain a cast restoration 27 shown in FIG.
【００１５】図９、図１１、図１３は原型の他の例を示
すものである。図９に示す原型６は、上面部２９の一側
に側面部３０を連設した断面Ｌ字状に形成されている。
かかる原型６を有する単位模型１ａを、前記鋳造スラス
ク１０を用いて鋳型材９で包埋して後、前記と同様の工
程を経ることにより、図１０に示す断面Ｌ字状の鋳造修
復物２７が得られる。図１１に示す原型６は、上面部２
９の周縁に側面部３０を垂設した冠状に形成されてお
り、前記と同様の工程を経ることにより、図１２に示す
冠状の鋳造修復物２７が得られる。図１３に示す原型６
は、側部の一部が欠けた深い窩洞にワックス等を充填す
ると共に欠けた側部を修正して角錐状に形成されてお
り、前記と同様の工程を経ることにより、図１４に示す
角錐状の鋳造修復物２７が得られる。FIG. 9, FIG. 11 and FIG. 13 show another example of the prototype. The prototype 6 shown in FIG. 9 has an L-shaped cross section in which a side surface portion 30 is continuously provided on one side of the upper surface portion 29.
The unit model 1a having the prototype 6 is embedded in the casting material 9 using the casting slusk 10 and the same steps as described above are performed, whereby a cast restoration 27 having an L-shaped cross section shown in FIG. Is obtained. The prototype 6 shown in FIG.
It is formed in a crown shape in which the side surface portion 30 is vertically provided on the peripheral edge of 9, and the crown-shaped cast restoration 27 shown in FIG. 12 is obtained by performing the same steps as described above. Prototype 6 shown in FIG.
Is formed into a pyramid shape by filling a deep cavity with a part of the side portion cut off with wax or the like and correcting the cut side portion, and the pyramid shape shown in FIG. A cast restoration 27 is obtained.
【００１６】[0016]
【発明の効果】本発明は以下のような優れた効果を奏す
る。 本発明によるときは、突出湯道が、従来のように噛
合面側ではなくその反対の裏面側に形成されることにな
る。従って従来のように、突出湯道を慎重に切除した後
に切除部分を入念に研磨しなければならないといった不
都合がなく、裏面側の突出湯道を切除して表面に適宜仕
上げ研磨を施すだけで、精度のよい鋳造修復物を能率的
に製造できる。The present invention has the following excellent effects. According to the present invention, the protruding runner is formed not on the mating surface side as in the conventional case but on the opposite back surface side. Therefore, unlike the conventional case, there is no inconvenience that the cut portion must be carefully polished after carefully cutting the protruding runner, and by simply cutting the protruding runner on the back side and appropriately finishing polishing the surface, A highly accurate casting restoration can be efficiently manufactured.
【００１７】 原型を模型から取り外す必要がないた
め、複雑形状の原型であっても、従来製法におけるよう
な原型の変形を招く要因が全く存しない。Since it is not necessary to remove the prototype from the model, even if the prototype has a complicated shape, there is no factor causing deformation of the prototype as in the conventional manufacturing method.
【００１８】 原型が模型に密着したまま鋳型材の注
入が行われるため、この注入の際、原型の裏側に気泡を
残すおそれが全くなく、従来のように、気泡に起因して
不良鋳造物が形成されるということがない。Since the mold material is injected while the prototype is in close contact with the model, there is no possibility of leaving bubbles on the back side of the prototype during this injection, and as in the conventional case, defective castings due to bubbles may occur. It is never formed.
【００１９】 従来製法のようにスプルー線を用いな
いため、その抜き忘れによる不良鋳型の形成のおそれが
ない。Since a sprue wire is not used as in the conventional manufacturing method, there is no fear of forming a defective mold due to forgetting to remove the sprue wire.
【図１】模型を示す斜視図である。FIG. 1 is a perspective view showing a model.
【図２】模型の窩洞底部に貫通孔を設けた状態を示す断
面図である。FIG. 2 is a cross-sectional view showing a state in which a through hole is provided at the bottom of a cavity of a model.
【図３】窩洞にワックスやレジンを充填して原型を形成
した状態を示す断面図である。FIG. 3 is a cross-sectional view showing a state in which a cavity is filled with wax or resin to form a prototype.
【図４】単位模型を示す断面図である。FIG. 4 is a cross-sectional view showing a unit model.
【図５】鋳造フラスクを用いて、単位模型を鋳型材で包
埋した状態を示す断面図である。FIG. 5 is a cross-sectional view showing a state in which a unit model is embedded in a mold material using a casting flask.
【図６】鋳型内に溶湯を湯込んだ状態を示す断面図であ
る。FIG. 6 is a cross-sectional view showing a state where molten metal is poured into a mold.
【図７】突出湯道が連なる鋳造体を示す断面図である。FIG. 7 is a cross-sectional view showing a cast body in which protruding runners are connected.
【図８】突出湯道を切除して得られた鋳造修復物を示す
断面図である。FIG. 8 is a cross-sectional view showing a cast restoration obtained by cutting off a protruding runner.
【図９】原型の他の例を、単位模型を鋳型材で包埋した
状態と共に示す断面図である。FIG. 9 is a cross-sectional view showing another example of the prototype together with a state in which a unit model is embedded in a mold material.
【図１０】鋳造修復物の他の例を示す断面図である。FIG. 10 is a cross-sectional view showing another example of the cast restoration.
【図１１】原型のその他の例を示す断面図である。FIG. 11 is a cross-sectional view showing another example of the prototype.
【図１２】鋳造修復物のその他の例を示す断面図であ
る。FIG. 12 is a cross-sectional view showing another example of the cast restoration.
【図１３】原型のその他の例を示す断面図である。FIG. 13 is a cross-sectional view showing another example of the prototype.
【図１４】鋳造修復物のその他の例を示す断面図であ
る。FIG. 14 is a cross-sectional view showing another example of the cast restoration.
【図１５】窩洞を有する従来製法での模型を示す断面図
である。FIG. 15 is a cross-sectional view showing a model having a cavity in a conventional manufacturing method.
【図１６】原型にスプルー線を植立した状態を示す断面
図である。FIG. 16 is a cross-sectional view showing a state in which a sprue wire is planted in a prototype.
【図１７】鋳造フラスクを用いて原型とスプルー線を鋳
型材で包埋した状態を示す断面図である。FIG. 17 is a cross-sectional view showing a state in which a prototype and a sprue wire are embedded in a mold material using a casting flask.
【図１８】鋳型を示す断面図である。FIG. 18 is a cross-sectional view showing a mold.
【図１９】突出湯道が連なる鋳造体を示す断面図であ
る。FIG. 19 is a cross-sectional view showing a cast body having a series of protruding runners.
【図２０】鋳造修復物を示す断面図である。FIG. 20 is a cross-sectional view showing a cast restoration.
【図２１】鋳型材を注入した際において、原型の裏側に
気泡が残留した状態を示す断面図である。FIG. 21 is a cross-sectional view showing a state in which air bubbles remain on the back side of the master when the mold material is injected.
【図２２】気泡に起因する不良鋳造体を示す断面図であ
る。FIG. 22 is a cross-sectional view showing a defective cast body caused by bubbles.
１ 模型 ２ 窩洞 ３ 貫通孔 ６ 原型 １０ 鋳造フラスク １１ 筒体 １２ 載置部 １３ 蓋体 １５ 載置部の上面 １８ 上端開口部 １９ 貫通孔の裏面側の端部 ２１ 鋳型 ２５ 鋳造体 ２６ 突出湯道 1 Model 2 Cavity 3 Through Hole 6 Prototype 10 Cast Flask 11 Cylindrical Body 12 Mounting Part 13 Lid Body 15 Upper Surface of Mounting Part 18 Upper End Opening 19 End on Back Side of Through Hole 21 Mold 25 Cast Body 26 Projected Runway
Claims (2)
型取り素材を押圧して形成した型を使用する歯科用鋳造
修復物の製造方法であって、 該型に基づいて、石膏系やリン酸系等の耐火性素材から
なる模型材を用いて模型（１）を製作した後、該模型
（１）に形成された窩洞（２）の底部に貫通孔（３）を
設け、その後、ワックス又はレジンを該窩洞（２）に充
填して鋳造体の原型（６）を形成し、その後、該原型
（６）を有する模型を、貫通孔（３）の裏面側の端部
（１９）が開放するように鋳型材（９）で包埋し、鋳型
材が硬化した後に前記原型（６）を焼却して鋳型（２
１）を形成し、該鋳型（２１）内に溶湯を鋳込み、脱型
後、鋳造体（２５）に連なる突出湯道（２６）を切除す
ることを特徴とする歯科用鋳造修復物の製造方法。1. A method for producing a dental casting restoration using a mold formed by pressing a molding material onto a tooth having a cavity from which pathological tissue has been removed, and a plaster-based mold based on the mold. After manufacturing the model (1) using a model material made of a refractory material such as phosphoric acid or the like, a through hole (3) is provided at the bottom of the cavity (2) formed in the model (1), and then , A wax or a resin is filled in the cavity (2) to form a prototype (6) of a cast body, and then the model having the prototype (6) is attached to an end portion (19) on the back surface side of the through hole (3). ) Is embedded in the mold material (9) so that the mold (2) is opened, and after the mold material is cured, the prototype (6) is incinerated to mold (2).
1) is formed, a molten metal is cast into the mold (21), the mold is removed, and then the protruding runner (26) connected to the cast body (25) is cut off. .
方法において、原型（６）を有する模型を鋳型材（９）
で包埋する際、筒体（１１）と、その底部に着脱自在に
嵌着され且つ上面に円錐台状或いは角錐台状を呈する載
置部（１２）を具えた蓋体（１３）とからなる鋳造フラ
スク（１０）を用いるものとし、該載置部（１２）の上
面（１５）に前記模型（１）の裏面部（１６）を当接さ
せると共に、貫通孔（３）に鋳型材が侵入するのを防止
するために該裏面部（１６）の周囲をワックスで被覆
し、その後蓋体（１３）を筒体（１１）の底部に嵌着し
て、筒体の上端開口部（１８）より鋳型材（９）を注入
し、該注入鋳型材の硬化によって、原型（６）を有する
模型を鋳型材（９）で包埋する歯科用鋳造修復物の製造
方法。2. The method for manufacturing a dental cast restoration according to claim 1, wherein the model having the prototype (6) is used as a mold material (9).
At the time of embedding with, a cylindrical body (11) and a lid body (13) detachably fitted to the bottom portion thereof and having a mounting portion (12) having a truncated cone shape or a truncated pyramid shape on the upper surface. A casting flask (10) is used, the back surface portion (16) of the model (1) is brought into contact with the upper surface (15) of the mounting portion (12), and the mold material is placed in the through hole (3). The back surface (16) is covered with wax to prevent invasion, and then the lid (13) is fitted to the bottom of the tubular body (11) to open the upper end opening (18) of the tubular body. A method for producing a dental casting restoration in which a mold material (9) is injected from the above and the model having the prototype (6) is embedded in the mold material (9) by curing the injected mold material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22228093A JPH07112475B2 (en) | 1993-08-13 | 1993-08-13 | Dental casting restoration manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22228093A JPH07112475B2 (en) | 1993-08-13 | 1993-08-13 | Dental casting restoration manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0751297A true JPH0751297A (en) | 1995-02-28 |
| JPH07112475B2 JPH07112475B2 (en) | 1995-12-06 |
Family
ID=16779901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22228093A Expired - Fee Related JPH07112475B2 (en) | 1993-08-13 | 1993-08-13 | Dental casting restoration manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07112475B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5147483A (en) * | 1974-10-22 | 1976-04-23 | Shimadzu Corp | Taiyano kinseidoshiken niokeru kipponhasaidaiichikenshutsusochi |
-
1993
- 1993-08-13 JP JP22228093A patent/JPH07112475B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5147483A (en) * | 1974-10-22 | 1976-04-23 | Shimadzu Corp | Taiyano kinseidoshiken niokeru kipponhasaidaiichikenshutsusochi |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07112475B2 (en) | 1995-12-06 |
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